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Golang library that demultiplexes line-oriented data from an io.Reader into multiple io.Readers based on a prefix.

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prefixedio

prefixedio (Golang package: prefixedio) is a package for Go that takes an io.Reader and de-multiplexes line-oriented data based on a line prefix to a set of readers.

Installation and Usage

Install using go get github.com/mitchellh/prefixedio.

Full documentation is available at http://godoc.org/github.com/mitchellh/prefixedio

Below is an example of its usage ignoring errors:

// Assume r is some set io.Reader. Perhaps a file, network, anything.
var r io.Reader

// Initialize the prefixed reader
pr, _ := prefixedio.NewReader(r)

// Grab readers for a couple prefixes
errR, _ := pr.Prefix("err: ")
outR, _ := pr.Prefix("out: ")

// Copy the data to different places based on the prefix
go io.Copy(os.Stderr, errR)
go io.Copy(os.Stdout, outR)

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Golang library that demultiplexes line-oriented data from an io.Reader into multiple io.Readers based on a prefix.

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